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;; ;;
;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
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$Revision: 2455 $
;******************************************************
; ïîèñê ïðèâîäîâ HDD è CD
; àâòîð èñõîäíîãî òåêñòà Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷.
; àäàïòàöèÿ è äîðàáîòêà Mario79
;******************************************************
;****************************************************
;* ÏÎÈÑÊ HDD è CD *
;****************************************************
FindHDD:
mov [ChannelNumber], 1
mov [DiskNumber], 0
call FindHDD_3
; mov ax,[Sector512+176]
; mov [DRIVE_DATA+6],ax
; mov ax,[Sector512+126]
; mov [DRIVE_DATA+8],ax
; mov ax,[Sector512+128]
; mov [DRIVE_DATA+8],ax
mov [DiskNumber], 1
call FindHDD_3
; mov al,[Sector512+176]
; mov [DRIVE_DATA+7],al
inc [ChannelNumber]
mov [DiskNumber], 0
call FindHDD_3
; mov al,[Sector512+176]
; mov [DRIVE_DATA+8],al
mov [DiskNumber], 1
call FindHDD_1
; mov al,[Sector512+176]
; mov [DRIVE_DATA+9],al
jmp EndFindHDD
FindHDD_1:
call ReadHDD_ID
cmp [DevErrorCode], 0
jne FindHDD_2
cmp [Sector512+6], word 16
ja FindHDD_2
cmp [Sector512+12], word 255
ja FindHDD_2
inc byte [DRIVE_DATA+1]
jmp FindHDD_2_2
FindHDD_2:
call DeviceReset
cmp [DevErrorCode], 0
jne FindHDD_2_2
call ReadCD_ID
cmp [DevErrorCode], 0
jne FindHDD_2_2
inc byte [DRIVE_DATA+1]
inc byte [DRIVE_DATA+1]
FindHDD_2_2:
ret
FindHDD_3:
call FindHDD_1
shl byte [DRIVE_DATA+1], 2
ret
; Àäðåñ ñ÷èòûâàåìîãî ñåêòîðà â ðåæèìå LBA
uglobal
SectorAddress DD ?
endg
;*************************************************
;* ×ÒÅÍÈÅ ÈÄÅÍÒÈÔÈÊÀÒÎÐÀ ÆÅÑÒÊÎÃÎ ÄÈÑÊÀ *
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå *
;* ïåðåìåííûå: *
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); *
;* DiskNumber - íîìåð äèñêà íà êàíàëå (0 èëè 1). *
;* Èäåíòèôèêàöèîííûé áëîê äàííûõ ñ÷èòûâàåòñÿ *
;* â ìàññèâ Sector512. *
;*************************************************
ReadHDD_ID:
; Çàäàòü ðåæèì CHS
mov [ATAAddressMode], 0
; Ïîñëàòü êîìàíäó èäåíòèôèêàöèè óñòðîéñòâà
mov [ATAFeatures], 0
mov [ATAHead], 0
mov [ATACommand], 0ECh
call SendCommandToHDD
cmp [DevErrorCode], 0;ïðîâåðèòü êîä îøèáêè
jne @@End ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè
mov DX, [ATABasePortAddr]
add DX, 7 ;àäðåñ ðåãèñòðà ñîñòîÿíè
mov ecx, 0xffff
@@WaitCompleet:
; Ïðîâåðèòü âðåìÿ âûïîëíåíèÿ êîìàíäû
dec ecx
; cmp ecx,0
jz @@Error1 ;îøèáêà òàéì-àóòà
; Ïðîâåðèòü ãîòîâíîñòü
in AL, DX
test AL, 80h ;ñîñòîÿíèå ñèãíàëà BSY
jnz @@WaitCompleet
test AL, 1 ;ñîñòîÿíèå ñèãíàëà ERR
jnz @@Error6
test AL, 08h ;ñîñòîÿíèå ñèãíàëà DRQ
jz @@WaitCompleet
; Ïðèíÿòü áëîê äàííûõ îò êîíòðîëëåðà
; mov AX,DS
; mov ES,AX
mov EDI, Sector512 ;offset Sector512
mov DX, [ATABasePortAddr];ðåãèñòð äàííûõ
mov CX, 256 ;÷èñëî ñ÷èòûâàåìûõ ñëîâ
rep insw ;ïðèíÿòü áëîê äàííûõ
ret
; Çàïèñàòü êîä îøèáêè
@@Error1:
mov [DevErrorCode], 1
ret
@@Error6:
mov [DevErrorCode], 6
@@End:
ret
iglobal
; Ñòàíäàðòíûå áàçîâûå àäðåñà êàíàëîâ 1 è 2
StandardATABases DW 1F0h, 170h
endg
uglobal
; Íîìåð êàíàëà
ChannelNumber DW ?
; Íîìåð äèñêà
DiskNumber DB ?
; Áàçîâûé àäðåñ ãðóïïû ïîðòîâ êîíòðîëëåðà ATA
ATABasePortAddr DW ?
; Ïàðàìåòðû ATA-êîìàíäû
ATAFeatures DB ? ;îñîáåííîñòè
ATASectorCount DB ? ;êîëè÷åñòâî îáðàáàòûâàåìûõ ñåêòîðîâ
ATASectorNumber DB ? ;íîìåð íà÷àëüíîãî ñåêòîðà
ATACylinder DW ? ;íîìåð íà÷àëüíîãî öèëèíäðà
ATAHead DB ? ;íîìåð íà÷àëüíîé ãîëîâêè
ATAAddressMode DB ? ;ðåæèì àäðåñàöèè (0 - CHS, 1 - LBA)
ATACommand DB ? ;êîä êîìàíäû, ïîäëåæàùåé âûïîëíåíèþ
; Êîä îøèáêè (0 - íåò îøèáîê, 1 - ïðåâûøåí äîïóñòèìûé
; èíòåðâàë îæèäàíèÿ, 2 - íåâåðíûé êîä ðåæèìà àäðåñàöèè,
; 3 - íåâåðíûé íîìåð êàíàëà, 4 - íåâåðíûé íîìåð äèñêà,
; 5 - íåâåðíûé íîìåð ãîëîâêè, 6 - îøèáêà ïðè âûïîëíåíèè
; êîìàíäû)
DevErrorCode dd ?
endg
;****************************************************
;* ÏÎÑËÀÒÜ ÊÎÌÀÍÄÓ ÇÀÄÀÍÍÎÌÓ ÄÈÑÊÓ *
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå *
;* ïåðåìåííûå: *
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); *
;* DiskNumber - íîìåð äèñêà (0 èëè 1); *
;* ATAFeatures - "îñîáåííîñòè"; *
;* ATASectorCount - êîëè÷åñòâî ñåêòîðîâ; *
;* ATASectorNumber - íîìåð íà÷àëüíîãî ñåêòîðà; *
;* ATACylinder - íîìåð íà÷àëüíîãî öèëèíäðà; *
;* ATAHead - íîìåð íà÷àëüíîé ãîëîâêè; *
;* ATAAddressMode - ðåæèì àäðåñàöèè (0-CHS, 1-LBA); *
;* ATACommand - êîä êîìàíäû. *
;* Ïîñëå óñïåøíîãî âûïîëíåíèÿ ôóíêöèè: *
;* â ATABasePortAddr - áàçîâûé àäðåñ HDD; *
;* â DevErrorCode - íîëü. *
;* Ïðè âîçíèêíîâåíèè îøèáêè â DevErrorCode áóäåò *
;* âîçâðàùåí êîä îøèáêè. *
;****************************************************
SendCommandToHDD:
; Ïðîâåðèòü çíà÷åíèå êîäà ðåæèìà
cmp [ATAAddressMode], 1
ja @@Err2
; Ïðîâåðèòü êîððåêòíîñòü íîìåðà êàíàëà
mov BX, [ChannelNumber]
cmp BX, 1
jb @@Err3
cmp BX, 2
ja @@Err3
; Óñòàíîâèòü áàçîâûé àäðåñ
dec BX
shl BX, 1
movzx ebx, bx
mov AX, [ebx+StandardATABases]
mov [ATABasePortAddr], AX
; Îæèäàíèå ãîòîâíîñòè HDD ê ïðèåìó êîìàíäû
; Âûáðàòü íóæíûé äèñê
mov DX, [ATABasePortAddr]
add DX, 6 ;àäðåñ ðåãèñòðà ãîëîâîê
mov AL, [DiskNumber]
cmp AL, 1 ;ïðîâåðèòü íîìåðà äèñêà
ja @@Err4
shl AL, 4
or AL, 10100000b
out DX, AL
; Îæèäàòü, ïîêà äèñê íå áóäåò ãîòîâ
inc DX
mov ecx, 0xfff
; mov eax,[timer_ticks]
; mov [TickCounter_1],eax
@@WaitHDReady:
; Ïðîâåðèòü âðåìÿ îæèäàíè
dec ecx
; cmp ecx,0
jz @@Err1
; mov eax,[timer_ticks]
; sub eax,[TickCounter_1]
; cmp eax,300 ;îæèäàòü 300 òèêîâ
; ja @@Err1 ;îøèáêà òàéì-àóòà
; Ïðî÷èòàòü ðåãèñòð ñîñòîÿíè
in AL, DX
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà BSY
test AL, 80h
jnz @@WaitHDReady
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà DRQ
test AL, 08h
jnz @@WaitHDReady
; Çàãðóçèòü êîìàíäó â ðåãèñòðû êîíòðîëëåðà
cli
mov DX, [ATABasePortAddr]
inc DX ;ðåãèñòð "îñîáåííîñòåé"
mov AL, [ATAFeatures]
out DX, AL
inc DX ;ñ÷åò÷èê ñåêòîðîâ
mov AL, [ATASectorCount]
out DX, AL
inc DX ;ðåãèñòð íîìåðà ñåêòîðà
mov AL, [ATASectorNumber]
out DX, AL
inc DX ;íîìåð öèëèíäðà (ìëàäøèé áàéò)
mov AX, [ATACylinder]
out DX, AL
inc DX ;íîìåð öèëèíäðà (ñòàðøèé áàéò)
mov AL, AH
out DX, AL
inc DX ;íîìåð ãîëîâêè/íîìåð äèñêà
mov AL, [DiskNumber]
shl AL, 4
cmp [ATAHead], 0Fh;ïðîâåðèòü íîìåð ãîëîâêè
ja @@Err5
or AL, [ATAHead]
or AL, 10100000b
mov AH, [ATAAddressMode]
shl AH, 6
or AL, AH
out DX, AL
; Ïîñëàòü êîìàíäó
mov AL, [ATACommand]
inc DX ;ðåãèñòð êîìàíä
out DX, AL
sti
; Ñáðîñèòü ïðèçíàê îøèáêè
mov [DevErrorCode], 0
ret
; Çàïèñàòü êîä îøèáêè
@@Err1:
mov [DevErrorCode], 1
ret
@@Err2:
mov [DevErrorCode], 2
ret
@@Err3:
mov [DevErrorCode], 3
ret
@@Err4:
mov [DevErrorCode], 4
ret
@@Err5:
mov [DevErrorCode], 5
; Çàâåðøåíèå ðàáîòû ïðîãðàììû
ret
;*************************************************
;* ×ÒÅÍÈÅ ÈÄÅÍÒÈÔÈÊÀÒÎÐÀ ÓÑÒÐÎÉÑÒÂÀ ATAPI *
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå *
;* ïåðìåííûå: *
;* ChannelNumber - íîìåð êàíàëà; *
;* DiskNumber - íîìåð äèñêà íà êàíàëå. *
;* Èäåíòèôèêàöèîííûé áëîê äàííûõ ñ÷èòûâàåòñÿ *
;* â ìàññèâ Sector512. *
;*************************************************
ReadCD_ID:
; Çàäàòü ðåæèì CHS
mov [ATAAddressMode], 0
; Ïîñëàòü êîìàíäó èäåíòèôèêàöèè óñòðîéñòâà
mov [ATAFeatures], 0
mov [ATASectorCount], 0
mov [ATASectorNumber], 0
mov [ATACylinder], 0
mov [ATAHead], 0
mov [ATACommand], 0A1h
call SendCommandToHDD
cmp [DevErrorCode], 0;ïðîâåðèòü êîä îøèáêè
jne @@End_1 ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè
; Îæèäàòü ãîòîâíîñòü äàííûõ HDD
mov DX, [ATABasePortAddr]
add DX, 7 ;ïîðò 1õ7h
mov ecx, 0xffff
@@WaitCompleet_1:
; Ïðîâåðèòü âðåì
dec ecx
; cmp ecx,0
jz @@Error1_1 ;îøèáêà òàéì-àóòà
; Ïðîâåðèòü ãîòîâíîñòü
in AL, DX
test AL, 80h ;ñîñòîÿíèå ñèãíàëà BSY
jnz @@WaitCompleet_1
test AL, 1 ;ñîñòîÿíèå ñèãíàëà ERR
jnz @@Error6_1
test AL, 08h ;ñîñòîÿíèå ñèãíàëà DRQ
jz @@WaitCompleet_1
; Ïðèíÿòü áëîê äàííûõ îò êîíòðîëëåðà
; mov AX,DS
; mov ES,AX
mov EDI, Sector512 ;offset Sector512
mov DX, [ATABasePortAddr];ïîðò 1x0h
mov CX, 256;÷èñëî ñ÷èòûâàåìûõ ñëîâ
rep insw
ret
; Çàïèñàòü êîä îøèáêè
@@Error1_1:
mov [DevErrorCode], 1
ret
@@Error6_1:
mov [DevErrorCode], 6
@@End_1:
ret
;*************************************************
;* ÑÁÐÎÑ ÓÑÒÐÎÉÑÒÂÀ *
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå *
;* ïåðåìåííûå: *
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); *
;* DiskNumber - íîìåð äèñêà (0 èëè 1). *
;*************************************************
DeviceReset:
; Ïðîâåðèòü êîððåêòíîñòü íîìåðà êàíàëà
mov BX, [ChannelNumber]
cmp BX, 1
jb @@Err3_2
cmp BX, 2
ja @@Err3_2
; Óñòàíîâèòü áàçîâûé àäðåñ
dec BX
shl BX, 1
movzx ebx, bx
mov DX, [ebx+StandardATABases]
mov [ATABasePortAddr], DX
; Âûáðàòü íóæíûé äèñê
add DX, 6 ;àäðåñ ðåãèñòðà ãîëîâîê
mov AL, [DiskNumber]
cmp AL, 1 ;ïðîâåðèòü íîìåðà äèñêà
ja @@Err4_2
shl AL, 4
or AL, 10100000b
out DX, AL
; Ïîñëàòü êîìàíäó "Ñáðîñ"
mov AL, 08h
inc DX ;ðåãèñòð êîìàíä
out DX, AL
mov ecx, 0x80000
@@WaitHDReady_1:
; Ïðîâåðèòü âðåìÿ îæèäàíè
dec ecx
; cmp ecx,0
je @@Err1_2 ;îøèáêà òàéì-àóòà
; Ïðî÷èòàòü ðåãèñòð ñîñòîÿíè
in AL, DX
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà BSY
test AL, 80h
jnz @@WaitHDReady_1
; Ñáðîñèòü ïðèçíàê îøèáêè
mov [DevErrorCode], 0
ret
; Îáðàáîòêà îøèáîê
@@Err1_2:
mov [DevErrorCode], 1
ret
@@Err3_2:
mov [DevErrorCode], 3
ret
@@Err4_2:
mov [DevErrorCode], 4
; Çàïèñàòü êîä îøèáêè
ret
EndFindHDD: